CVE-2017-8779

HIGH

Description

rpcbind through 0.2.4, LIBTIRPC through 1.0.1 and 1.0.2-rc through 1.0.2-rc3, and NTIRPC through 1.4.3 do not consider the maximum RPC data size during memory allocation for XDR strings, which allows remote attackers to cause a denial of service (memory consumption with no subsequent free) via a crafted UDP packet to port 111, aka rpcbomb.

References

http://openwall.com/lists/oss-security/2017/05/03/12

http://openwall.com/lists/oss-security/2017/05/04/1

http://www.debian.org/security/2017/dsa-3845

http://www.securityfocus.com/bid/98325

http://www.securitytracker.com/id/1038532

https://access.redhat.com/errata/RHBA-2017:1497

https://access.redhat.com/errata/RHSA-2017:1262

https://access.redhat.com/errata/RHSA-2017:1263

https://access.redhat.com/errata/RHSA-2017:1267

https://access.redhat.com/errata/RHSA-2017:1268

https://access.redhat.com/errata/RHSA-2017:1395

https://github.com/drbothen/GO-RPCBOMB

https://github.com/guidovranken/rpcbomb/

https://guidovranken.wordpress.com/2017/05/03/rpcbomb-remote-rpcbind-denial-of-service-patches/

https://security.gentoo.org/glsa/201706-07

https://security.netapp.com/advisory/ntap-20180109-0001/

https://usn.ubuntu.com/3759-1/

https://usn.ubuntu.com/3759-2/

https://www.exploit-db.com/exploits/41974/

Details

Source: MITRE

Published: 2017-05-04

Updated: 2018-09-06

Type: CWE-399

Risk Information

CVSS v2.0

Base Score: 7.8

Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:C)

Impact Score: 6.9

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH